EP0874072B1 - Method and apparatus for the manufacture of a multi-coloured yarn composed of differentially dyed continuous filament yarns - Google Patents

Description

The invention relates to a method and a device according to the preamble of the independent Expectations.

From a European patent publication No. 0485871 B1 (Barmag) is a Process already known in which differently colored, each from a spinning shaft Coming partial threads each via a preparation and by precompacting to be subsequently stretched by means of a pair of godets, in textured in a texturing nozzle, cooled on a cooling drum, together in a swirling nozzle compacted and then wound up.

This is the compacting between the preparation and the stretching godets around interlacing nozzles per thread, which are the known per se Cause turbulence. Such a disadvantage for texturing In this process, bottlenecks are created by stretching using the stretching godets dissolved again before the partial threads get into the texturing nozzle.

The present invention relates to the improvement of a method for production of yarn as published in U.S. Patent 4,025,595. Such a yarn includes at least two different filament bundles, each bundle separately swirled and later the bundles are swirled together to form the yarn. The obvious "difference" between the two filament bundles concerns their color, by making a multicolor yarn. This type of procedure is therefore advantageous with reference to two different colored filament bundles, the Color difference is not the essential feature of the invention. Desirable "effects" in regarding yarn structures and appearance of the yarn can be combined by combining obtained from filament bundles that have other "differences" for example those mentioned in US 4,025,595.

The process explained in U.S. Patent 4,025,595 was for relatively low spinning speeds provided, in comparison with today's modern spinning processes. In the further were only able to use textured products using successive processes with intermediate products be obtained in the so-called "spin-draw-rinsing process" such as this is mentioned in the aforementioned US patent.

The production of similar yarns using modern on-line processes has proven to be proved difficult, in that a texturing step in the continuous process line is included. The swirling step published in U.S. Patent 4,025,595 has the tendency to disrupt a texturing step. An attempt to solve this problem can be found in EP-B-485 871 and in EP-A-434 601. In these cases the filament bundle is treated above the texturing step to insure that the two steps can be separated from each other with the aim of Maintain "induvidiality" of the two filament bundles in the end yarn. This procedure have achieved a degree of success, but they do not give the yarn manufacturers the reliability and flexibility required, given that "Yarn manufacturers" a different group of organizations with different Form marketing and product strategies.

The new invention includes a method of making a yarn with a Plurality of different filament bundles, the method comprising the step of Unification of the filament bundles involves, for example, by swirling to thereby to form a yarn. The process is characterized by the process step in which at least one bundle of filaments individually above the connecting step and below all the previous stretching, texturing and combining steps is treated. Individual treatment can be provided to measure the induvidiality of the treated filament bundle after the bundles have been joined obtained yarn product to increase. Individual treatment can (for example) include a treatment that reflects the compactness of the fibril bundle increased (for example by swirling) at the entrance of the connection step. In the preferred embodiment, each bundle of fibrils becomes individual and immediate treated before entering the connection step.

In so far as previous treatment steps were used, the filament bundle have brought together (for example texturing in a common Texturing chamber) it is necessary to separate the filament bundles again, if this is required for individual treatment according to the present invention to enable. In the preferred embodiment, the filament bundles kept separate until the unification step. On the other hand, it is not always economic Reasons possible this goal of "separate treatment until unification" to achieve, which is why different measures can be adopted to to improve the keeping of the filament bundles separately, even if they are before the union be brought together. Such measures include swirling and the wrong turning of the individual bundles, for example in front of a common one Texturing.

• Farbe
• Titer
• Anzahl der Fibrillen im Filamentbündel
• Polymertyp
• Anfärbbarkeit
• Querschnitt der Fibrillen
• Additive in den Fibrillenbündeln

The "difference" between two filament bundles which are processed according to the invention contain differences in

• colour
• titres
• Number of fibrils in the filament bundle
• polymer type
• dyeability
• Cross section of the fibrils
• Additives in the bundles of fibrils

The invention provides a highly controllable influencing method the structure and / or appearance of the yarn product, that is, it is one highly efficient method for creating "effects". This is thanks to the fact that the unification step immediately after the individual treatment step follows, because there are no intermediate procedural steps that affect the trend have the effect of downsizing or which have to be considered in order determine the measure of individual treatment. For example, one includes Type of individual treatment the step of bringing the "local" together Fibrils of a bundle of fibrils (by forming "bottlenecks"), the "local" Connections along the length of the filament bundle are provided at intervals. In a method according to the invention, the number of local connections can be per unit length of the filament, the tightness of the connection in place and the uniformity of the connection steps along the length of the filament bundle, can be controlled with reference to the desired effect and without restrictions, given by process steps other than joining. As already in the US-PS 4,025,595 proposed it is possible to achieve desired "effects" "Balancing" the individual treatment with the collective treatment in the connecting step to create.

With reference to the method described in WO 96/09425 (Obj. 2509), is an example described an embodiment of the invention, wherein the main elements in the A are shown. For the sake of simplicity, only two filament bundles I and II are shown. After the filament bundles have been spun separately (spinning beam and nozzle arrangement not shown), they are by means of a first roller G1 and a second Roll G2 stretched before being wound in a winder W. (the A is only schematic). In the modification according to the invention the filament bundles are treated individually at T1 and T2 and the treated ones Filament bundles are combined into a yarn in J.

B shows schematically an untreated filament bundle - fibrils of untreated Filament bundles are free from those of another untreated one Filament bundles "unite" when the two filament bundles are brought together become. A method to increase the freedom of such fibrils to "unite" limit, is that "compact places" S are provided in each bundle, as shown in Fig. C. Such compact locations can be, for example, by Swirling be shaped. Such compact places arise during the swirling when an air jet is blown across the running bundle of fibrils, which divides the bundle of fibrils into two parts and then an opposite in both parts Directed swirl caused, which is canceled after leaving the air jet is, the fibrils of the two bundles of fibrils during this swirl mix into each other and cause the bottlenecks. It starts after the passage of the rear constriction, seen in the running direction, the same again. Another method to limit the freedom of the "association" is: the false twist of the filament bundle, as shown for example in Fig. D. It is common knowledge that it is not possible to have a "real spin" in a running Thread (bundle of filaments) using a false twist between two ends of the thread produce. On the other hand, it is possible to form a kind of "reversing twist", as is shown in FIG. D in which the filament bundle has a first twist direction in the region R1 and shows a second twist direction in region R2 - it is also possible this "Fix" twist patterns in which twist stops are brought into the yarn structure. The introduction of "swirl stops" can be achieved by treating one Bundle is combined with another bundle to form a yarn, as is shown in FIG. A with J is shown.

FIG. E schematically shows a device by means of which "compact locations" S can be introduced on a filament bundle. The device comprises a common inlet (shown with arrow P) and three exits (shown with small arrows within the figure). The filament bundle is passed one after the other at the three exits and is thereby swirled. Similar intermingling processes can be used in the "unification step" for bringing fibril bundles together to form a yarn, the air pressure used in the combining phase probably being much higher than in the individual intermingling, for example 0.3 bar in the individual intermingling (eg T ₁ and T ₂ ) and approximately 6 bar in the swirling union (J). The distance between the units T ₁ and T ₂ from the unit J should be sufficiently large to avoid mutual interference, unless such interference is acceptable in relation to the effect to be achieved (accidental influences).

The arrangement shown in Figure A is "simple" in that the filament bundles are clear can be kept separate from each other (with distance between the filament bundles) up to the unification step J. However, this is not always possible as shown for example in the arrangement of EP-A-434 601. In such In some cases it is desirable to provide additional means to "fuse" the fibrils to avoid the filament bundle before (controlled) swirling in stage J. The term "merging" is intended to indicate the tendency which exists if in itself two filament bundles originally run separately in an uncontrolled one Kind of mix by putting the two filament bundles in contact with each other advised if no measures are taken to avoid this mixing. Appropriate measures are, however, from the aforementioned prior art known.

The invention is not restricted to the treatment of the filament bundles by means of Air nozzles. Treating the individual filament bundles and uniting the For example, bundles can also be made using adhesive material or be carried out by forming "welds". Depending on the effect, which in To achieve yarn, it may also be desirable to have a bundle of filaments in front forming the yarn by combining the bundles of filaments to leave untreated-that untreated bundles give the yarn a "downy" effect.

The advantage of the invention is that by compacting the individual threads (T1 and T2 in Fig. A) after texturing (Fig. 1-8) and before than later than Collective compacting refers to compacting the combined partial threads (J in Fig. A) the quality i.e. safety in color separation and thus color recognition of the individual partial threads in the yarn repeatable compared to the prior art is improved.

Before the description of the figures, let's look at some more detailed solutions for implementation the compacting, or the texturing, to which in the course of Description of the other figures, reference is made.

"Compacting" should be understood to mean the compression of the fibril bundles either over the entire length of the fibril bundle using a False twist or selectively using a swirl nozzle.

For example, swirling nozzles are used as compacting agents can be known from US-4,025,595, US-3,364,537 or US-3,426,406 and from EP-0434601 A1 false twist nozzles are known, which are also in the type described therein can be used as compacting agents.

Furthermore, each of EP-0039763, EP-0110359 A1, EP-0123072 A1, EP-0123829 a texturing nozzle is known, which is advantageously hinged to enable 16 Insert one or more threads for texturing, whereby the Texturing takes place after the texturing nozzle is closed again. Because such texturing nozzles work in the conveyor section according to the injector principle, they are not only able to to continue feeding the threads after the nozzles have closed, but also if necessary to be sucked in so that non-opening texturing nozzles can also be used to bring the threads into the texturing nozzle. Another option is there in bringing the threads into and through the texturing nozzles using a suction gun.

Likewise, a texturing nozzle is known from CH-680140 A5, which at the entrance Injection nozzles, which, to generate a protective twist in the thread, eccentric open into the yarn guide channel.

In the texturing nozzles known from EP-0039763 A1, EP-0123072 A1, EP-0123829 A1 the partial thread is heated and conveyed in one channel or Chamber trained heating and conveying element, and the grafting or curling, or texturing in a second chamber in which the blown heated Gas can escape again, so that a plug can be removed from the chamber can. To cool the plug, it is placed on a transporting cooling element, for example, a rotating cooling drum.

Another texturing device is known from EP-310890 A1 (Rolltex), which a heating and conveying channel for heating and conveying the thread, or the yarn and a needle roller connected to it to form the yarn plug composed, the plug after the needle roller on a cooling drum, to cool the graft.

Likewise, texturing agents are known from US Pat. No. 3,255,508 (Mitsubishi) assemble from a heating and delivery nozzle and a subsequent cooling drum, the plug formation due to the impact of the heated and conveyed thread arises on the cooling drum.

Fig. 1

eine Vorrichtung zur Erzeugung eines erfindungsgemässen mehrfarbigen Garnes aus anders anfärbenden oder unterschiedlich farbigenTeilfäden, schematisch dargestellt,

Fig. 2

eine Variante eines Teiles von Fig. 1,

Fig. 3

eine Variante der Vorrichtung von Fig. 1,

Fig. 4

eine Variante eines Details der erfindungsgemässen Vorrichtung,

Fig. 5 bis 6

je Varianten eines Teiles der Fig. 1,

The invention will now be further explained on the basis of further exemplary embodiments.
It shows:

Fig. 1

a device for producing a multi-colored yarn according to the invention from partially colored or differently colored partial threads, shown schematically,

Fig. 2

a variant of a part of Fig. 1,

Fig. 3

a variant of the device of Fig. 1,

Fig. 4

a variant of a detail of the device according to the invention,

5 to 6

each variant of a part of FIG. 1,

Fig. 1 shows a device for producing a multi-colored yarn with here, for example three spinning shafts, each with differently colored partial threads 11 or Generate 11.1 or 11.2. These partial threads 11, 11.1, 11.2 are each via a preparation agent 2 performed, which is usually an oiling agent.

Such yarns can also consist of two or more threads.

After the preparation agent 2, the partial threads 11-11.2 each arrive separately in an associated one referred to as precompacting means 3, which either a known swirling agent or preferably a known swirling agent False twist means, both means already at the beginning as state of the art were mentioned.

After the precompacting means, the partial threads 11-11.2 are stretched on godets 4 stretched to a predetermined dimension heated or heated, i.e. in the area the glass transition point, or brought into the thermoplastic area. at Swirling is used as a precompacting agent provided such that when stretching the interlaced threads 11-11.2 the Swirl constrictions at least partially again, depending on the type of swirl be saved in order not to lose any of the texturing quality of the yarn.

After the stretching godets 4, the partial threads 11-11.2 are together in a texturing nozzle 5 textured, primarily due to the partial threads in a heating and conveying element 6 of a conveyor system acting on the injector principle is sucked in, warmed up and are conveyed into a crimping element 7 in order to be there due to the escape of the heating and conveying gases between fins 32 or other equivalent air permeable Elements and the resulting reduction in conveying speed and further resulting friction of the individual fibrils of the threads on the wall of the cooling and crimping element 7 are compressed into a plug, which then is placed on a cooling drum 16. From the operator the plug before or after the cooling drum 16 in crimped threads 11.3 - 11.5 divided, which also applies to the figures to be described 2 to 6 and 8, and via a take-off roller 33 and, if necessary, via deflecting thread guide 31 into an associated, as post-compacting means 8 - referred to as T1 or T2 in connection with FIG Compacting agent performed, the post-compacting agent 8 either one known per se or one in connection with FIG. D False twist mentioned or preferably a swirling agent known per se is. The above-mentioned detection by the operator takes place with the help of a known suction pistol, the separation into the partial threads manually and with Help from thread guides, not shown here, happens for each thread.

After the post-compacting means 8, the partial threads 11.3-11.5 are, if necessary, over Deflection thread guide 31 combined on a godet 34, then in one referred to as collective compacting means 9 or in connection with FIG. A as J. Compacting means compacted together, that is, either preferably swirled together with means known per se or rotated wrongly together, around the yarn 12 again over a godet 35 and then in the winder 10 to be wound up. Since these godets are conveyor rollers, can optionally on one or both godets 33 or 34 in front of or on the godet 35 after the compacting means 9 or without all three godets 33, 34 and 35, which has to be determined by tests depending on the material.

In the latter case, the threads are directly from the winder 10 from the cooling drum 16 and pulled by the post-compacting means 8 and collective compacting means 9.

FIG. 2 shows a variant compared to FIG. 1 for texturing the partial threads 11-11.2 after the stretch godets 4 a heating and conveying element 15 with the same functions as the element 6 and then one known per se from US-3255508 Cooling drum 16 with the additional function of element 7, i.e. the Grafting is formed on the cooling drum 16 and cooled. The other elements correspond the elements already described for FIG. 1 and are therefore not mentioned again.

Fig. 3 shows a variant of Fig. 1 instead of the spinning shafts 1 individual coils with dyed partial threads, also called dyed bobbins 13, and as a further variant for the purpose of texturing the partial threads marked here with 14-14.2, according to the Stretching godets 4 a heating and conveying element 17, which functionally the aforementioned Corresponds to elements 6 and 15, with subsequent needle roller 18 and subsequent Cooling drum 16 and plug deflection element 30 provided between them, the combination of elements 17, 18, 16 and 30 described in EP-0310890 A1 is why reference is made to this EP document for further details. The remaining Elements correspond to the elements of the aforementioned figures and are therefore not mentioned again.

On the other hand, it should be mentioned that the use of supply spools 13 (e.g. colored ones Spools) instead of spinning chutes 1, possible for all variants of the other figures is.

4 shows a combination of stretch godets 4.1 with a known one Surface heating element 19 which is provided between the two stretch godets and in addition to the heating by means of the godets 4 or only the heating of the sliding threads 11-11.2 or 14-14.2.

FIG. 5 shows a variant of a part of FIG. 1, insofar as a texturing nozzle 20, which has a suction part 21 for each thread 11-11.2 or 14-14.2 issued a protective twist to the corresponding thread, followed by the partial threads in the heating and conveying element 21.1 by means of the conveying medium heated and conveyed and in the subsequent crimping element 22 into one Plugs are curled. The individual heating and delivery channels of the Partial threads combined in the crimping element, i.e. that imaginary levels of symmetry of the individual heating and delivery channels intersect in front of the crimping element. The other elements correspond to the elements already described and will therefore not mentioned again.

6 shows, compared to FIG. 5, a further variant of a texturing nozzle in the a texturing nozzle 23 for the filaments, a heating and conveying element 24 and also has a common crimping element 25 in order to separate the individual partial threads for heating and conveying, and texturing together. This leads to the individual Heating and delivery channels of the partial threads side by side into the crimping element, i.e. that imaginary levels of symmetry of the individual heating and delivery channels outside the Cut heating and conveying element 24, the intersection not being shown.

The other elements correspond to the elements already described and are therefore not mentioned again.

It should also be mentioned that in the figures, the partial threads to be crimped up to and with the texturing agent with 11-11.2 and that after the texturing agents crimped partial threads up to the collective compacting agent 9 with 11.3-11.5 and subsequently marked as yarn 12.

Likewise, in all variants of Figures 1-6 either partial threads from the spinning chutes 1 or processed by the coils 13. Likewise, where necessary, deflecting thread guides 31 are provided in the figures is shown schematically in the figures.

It is understood that advantageously for all elements provided with an injector principle a swirl distribution principle shown with CH-680140 A5 can be used can, in order to impart a protective twist to the threads passed through the texturing nozzle, which, in addition to the otherwise mentioned compacting of the partial threads, ensures that in the case of multiple threading through a texturing nozzle, the individual partial threads themselves not getting caught up in each other, but essentially remaining side by side, the upper twist stop of the corresponding part of the thread in the thread running direction preceding godet of pair of godets 4 is.

A protective twist is particularly useful if the threads as shown in FIGS. 1-5 be textured in a common texturing nozzle.

It should also be mentioned that when using the false twist principle for compacting of the threads after the preparation 2, this preparation 2 as Twist stop can be used if no deflection thread guide 31 from any Reasons are used, and that the term "different staining thread" It is to be understood that such threads in the color process, for example when using same color, nuances different but desirable color effects contain.

It should also be mentioned that with the post-compaction mentioned using swirling nozzles, the compacting effect by means of pressure (bar) and / or quantity (kg / h) and / or the temperature of the gas, e.g. Air or steam is changed by changing the Number of intermingling per unit length of thread more or less selectable different fails. This is used according to the invention in order to achieve the color effect of the manufacture yarns in addition to varying the color effect by selecting the colors to vary.

In addition, these parameters (pressure, quantity, temperature of the gas) per thread be chosen differently, so that from thread to thread a difference in the swirling and thus in the intensity of the color separation or color recognition in the yarn.

Legend

1

Spinning shaft with or without subdivisions

2

preparation agent

3

Vorkompaktierungsmittel

4-4.2

godets

5

texturing

6

Heating and conveying element

7.1-7.3

curling element

8th

Nachkompaktierungsmittel

9

Kollektivkompaktierungsmittel

10

spuler

11-11.2

part threads

11.3-11.5

crimped threads

12

yarn

13

colored coils

14-14.2

part threads

14.3-14.5

crimped threads

15

Heating and conveying element

16

cooling drum

17

Heating and conveying element

18

needle roller

19

panel heating

20

texturing

21

Heating and conveying and swirl element

22

curling element

23

texturing

24

Heating and conveying element

25

curling element

26

Heating and conveying element

27

curling element

28

texturing

29

conveying rollers

30

articulating

31

Umlenkfadenführer

32

slats

33

galettes

34

galettes

35

galettes

36

Cooling air applicator

37

Kühlluftabsaugelement

38

texturing

39

Heating and conveying element

40

curling element

41

outer wall

42

partition

43

slats

44

Air outlet direction

45

Thread tangled position

46

upper flange

47

lower flange

48

plane of symmetry

49

slats

I, II

fibril

G1, G2

galettes

T1, T2, J.

compacting

S

Eugstellen

R1, R2

Rotation in the bundle of fibrils

P

gas pressure

Claims (24)

1. Method for producing a thread (12) from several part threads (11,11.1,11.2), whereby the part threads are jointly crimped and submitted to a winding up (10), characterized in that each part thread (11, 11.1, 11.2) for itself is conveyed in a conveying means (21,21.1) by means of a conveying medium and the part threads in a following crimping means (22,25) are crimped together into a plug.
2. Method according to claim 1, characterized in that the part threads (11, 11.1, 11.2) lead jointly into the crimping means (22,25).
3. Method according to claim 1, characterized in that the textured thread is divided again into part threads after the texturizing and each part thread before collective compacting is submitted to a post-compacting.
4. Method according to claim 1, characterized in that before the texturizing the part threads are submitted to a drafting.
5. Method according to claim 1 and 4, characterized in that a pre-compacting is accomplished separately per part thread before the drafting and/or the texturizing.
6. Method according to one of the preceding claims, characterized in that the compacting mentioned is accomplished selectively by means of entangling compacting and/or by means of false-twist compacting.
7. Method according to one of the preceding claims, characterized in that the pre-compacting is a false-twist compacting and the post-compacting and collective compacting each an entangling compacting.
8. Method according to claim 3, characterized in that a change of the effect of the finished yarn (12) is accomplished by variation of at least one of the following parameters during entangling in the post-compacting process, that is for each part thread identically or differently, that is:

   the pressure (bar);

   the amount (kg/h);

   the temperature (°C) of the gas being used for entangling, for example air and/or steam.
9. Method according to claim 5, characterized in that the mentioned pre-compacting is a false-twist compacting and the twisting is generated by twisting means, which generates the twisting, seen in direction of thread travelling, before the drafting and/or texturizing.
10. Method according to claim 9, characterized in that the mentioned twisting takes place by means of a twisting produced by way of the conveying element.
11. Device for the production of a thread of several part threads with a texturizing nozzle (20,23) consisting of a conveying element (21,21.1) and a crimping means (22,25) for all part threads, characterized in that for each part thread, a respective conveying element (21,21.1) is provided, whereby these conveying elements jointly open into the crimping element (22,25).
12. Device according to claim 11, characterized in that the conveying elements (21,21.1) are arranged in such a manner that imaginary symmetry planes of the individual conveying elements (21,21.1) cross one another, seen in travelling direction of the thread, before the crimping element (22),.
13. Device according to claim 11, characterized in that imaginary symmetry planes of the individual conveying channels (21,21.1) cross one another outside the conveying component (24) and/or within the crimping element (25), whereat the point of intersection is not shown.
14. Device according to claim 11, characterized in that the conveying element (21) is being provided with a sucking part, which gives a false-twist to the respective part thread.
15. Device according to claim 11, characterized in that in front of the texturizing nozzle (20,23), seen in thread travelling direction, a stretching means (4) is provided for the part threads (11,11.1,11.2).
16. Device according to claim 11, characterized in that in front of the texturizing nozzle (20,23), seen in thread travelling direction, a pre-compacting means (3) is provided.
17. Device according to claim 15 and 16, characterized in that the pre-compacting means (3) is provided, seen in thread travelling direction, in front of the stretching means (4).
18. Device according to claim 11, characterized in that after the texturizing nozzle (20,23), seen in thread travelling direction, a post-compacting means (8) is provided for the part threads (11,11.1,11.2).
19. Device according to claim 11, characterized in that after the texturizing nozzle (20,23), seen in thread travelling direction, a collective compacting means (9) is provided for the part threads (11,11.1,11.2).
20. Device according to claim 18 and 19, characterized in that the post-compacting means (8) is provided, seen in thread travelling direction, in front of the collective compacting means (9).
21. Device according to one of the preceding claims 11 to 20, characterized in that the compacting means is selectively an entangling compacting means and/or a false-twist means.
22. Device according to one of the claims 11 to 21, characterized in that the pre-compacting means (3) is each a false-twist means and the post-compacting means (8) and/or the collective compacting means (9) are each an entangling compacting means.
23. Method according to claim 1, characterized in that each part thread is also heated within the conveying component.
24. Method according to claim 23, characterized in that each part thread is heated by means of the conveying medium.

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